X-Wing is good! It's a simple, fast game with surprising depth - partially from force selection, mostly from outsmarting your opponent. Pretty simple to set up and take down, defaults to a 3' x 3' table making it playable almost anywhere, and most games are 60-90 minutes. FFG has a slick
tutorial video that gives you the basics. Definitely worth checking out.
SAGA is a "warband" scale game set during the Viking Age. A single "point" will buy you 4 Hearthguard, 8 Warriors or 12 Levy troops, with most games played at the 4-6 point range. While the force you're playing has some differentiation based on army (Normans Warriors can opt to ne mounted, Welsh have the option to have more javelins, etc.) the basic troops are all really similar - a Hearthguard is a Hearthguard, a Levy is a Levy, etc. Where your army gets its flavor is from its Battle Board.
A Battle Board is a board with 18 boxes in it. In each box is rule and a cost, in dice, to be able to activate that rule. Each turn you roll a number of "SAGA dice" based on what forces you have on the table (2 for your Warlord, 1 for each Hearthguard unit, 1 for each Warrior unit, none for Levies). You then place those dice on your Battle Board and get to activating your units and special rules.
It's an ingeniously clever system with well-balanced forces. And the rule book is well laid out with great examples and walkthroughs of each mechanic. If the period interests you at all, it's well worth a look.